High carrier separation efficiency for a defective g-C<inf>3</inf>N<inf>4</inf>with polarization effect and defect engineering: Mechanism, properties and prospects

Bai, X; Jia, T; Wang, X; Hou, S; Hao, D; Bingjie-Ni,

High carrier separation efficiency for a defective g-C<inf>3</inf>N<inf>4</inf>with polarization effect and defect engineering: Mechanism, properties and prospects

Bai, X Jia, T Wang, X Hou, S Hao, D Bingjie-Ni,

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Publisher:: ROYAL SOC CHEMISTRY
Publication Type:: Journal Article
Citation:: Catalysis Science and Technology, 2021, 11, (16), pp. 5432-5447
Issue Date:: 2021-08-21

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Field	Value	Language
dc.contributor.author	Bai, X
dc.contributor.author	Jia, T
dc.contributor.author	Wang, X
dc.contributor.author	Hou, S
dc.contributor.author	Hao, D
dc.contributor.author	Bingjie-Ni,
dc.date.accessioned	2022-05-01T22:55:14Z
dc.date.available	2022-05-01T22:55:14Z
dc.date.issued	2021-08-21
dc.identifier.citation	Catalysis Science and Technology, 2021, 11, (16), pp. 5432-5447
dc.identifier.issn	2044-4753
dc.identifier.issn	2044-4761
dc.identifier.uri	http://hdl.handle.net/10453/156895
dc.description.abstract	As a green, visible-light-driven metal-free semiconductor material, graphitic carbon nitride (g-C3N4) has generated tremendous significance in the fields of environmental purification and energy conversion. Inducing a polarization effect by creating defects in g-C3N4 is a promising strategy for improving photocatalytic properties. The polarization effect in photocatalysts could be created by manufacturing vacancies, doping impurity atoms, constructing heterostructure, etc. Recently, defective g-C3N4 has attracted wide attention due to its remarkable performance in the separation and migration of photogenerated charge carriers. However, the relationship between defects and the polarization effect remains to be clarified in terms of improving the photocatalytic performance. In this minireview, we summarize the recent advances on how the polarization effect and defect engineering expedite the photogenerated carrier migration and separation to improve the photocatalytic properties of g-C3N4. Is it pure synergy or is there some degree of antagonism? Ultimately, the major challenges for simply constructing the polarization effect and internal electric field in g-C3N4 and inspiring perspectives for future opportunities in polarization-defect type photocatalysis are discussed. It is believed that this work can provide a new idea for the design of novel and efficient photocatalysts in the future.
dc.language	English
dc.publisher	ROYAL SOC CHEMISTRY
dc.relation.ispartof	Catalysis Science and Technology
dc.relation.isbasedon	10.1039/d1cy00595b
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0302 Inorganic Chemistry, 0306 Physical Chemistry (incl. Structural), 0904 Chemical Engineering
dc.title	High carrier separation efficiency for a defective g-C<inf>3</inf>N<inf>4</inf>with polarization effect and defect engineering: Mechanism, properties and prospects
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0302 Inorganic Chemistry
utslib.for	0306 Physical Chemistry (incl. Structural)
utslib.for	0904 Chemical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2022-05-01T22:55:10Z
pubs.issue	16
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	16

Abstract:

As a green, visible-light-driven metal-free semiconductor material, graphitic carbon nitride (g-C3N4) has generated tremendous significance in the fields of environmental purification and energy conversion. Inducing a polarization effect by creating defects in g-C3N4 is a promising strategy for improving photocatalytic properties. The polarization effect in photocatalysts could be created by manufacturing vacancies, doping impurity atoms, constructing heterostructure, etc. Recently, defective g-C3N4 has attracted wide attention due to its remarkable performance in the separation and migration of photogenerated charge carriers. However, the relationship between defects and the polarization effect remains to be clarified in terms of improving the photocatalytic performance. In this minireview, we summarize the recent advances on how the polarization effect and defect engineering expedite the photogenerated carrier migration and separation to improve the photocatalytic properties of g-C3N4. Is it pure synergy or is there some degree of antagonism? Ultimately, the major challenges for simply constructing the polarization effect and internal electric field in g-C3N4 and inspiring perspectives for future opportunities in polarization-defect type photocatalysis are discussed. It is believed that this work can provide a new idea for the design of novel and efficient photocatalysts in the future.

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http://hdl.handle.net/10453/156895